HARRISBURG, Pa. (AP) — Officials who run Pennsylvania’s major public pension funds are fielding lots of questions from lawmakers about rising costs.

Executives from the Public School Employees’ Retirement System and the State Employees’ Retirement System spent more than two hours Wednesday before the Senate Appropriations Committee. They’re to appear before the House panel later in the day.

Several senators asked about Gov. Tom Corbett’s proposal to require newly hired state and school employees to be enrolled in a 401(k)-style plan in which they would invest their contributions and a state match.

The pension officials say such an arrangement is workable, but warn that the size of the pension would depend on employees’ investment skills. Committee Chairman Jake Corman says lawmakers must decide whether employees or the state should bear the risk.